{"id":168349,"date":"2024-11-06T11:38:30","date_gmt":"2024-11-06T03:38:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168349\/"},"modified":"2024-11-06T11:38:31","modified_gmt":"2024-11-06T03:38:31","slug":"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%84%aa%e5%8c%96%ef%bc%9a%e7%b0%a1%e5%96%ae%e5%bf%ab%e6%8d%b7%e5%88%aa%e9%99%a4%e8%87%a8%e6%99%82%e8%a1%a8%e7%a9%ba%e9%96%93-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%aa","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168349\/","title":{"rendered":"SQL \u6578\u64da\u5eab\u512a\u5316\uff1a\u7c21\u55ae\u5feb\u6377\u522a\u9664\u81e8\u6642\u8868\u7a7a\u9593 (sql \u6578\u64da\u5eab\u522a\u9664\u81e8\u6642\u8868\u7a7a\u9593)"},"content":{"rendered":"<h1 id=\"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%84%aa%e5%8c%96%ef%bc%9a%e7%b0%a1%e5%96%ae%e5%bf%ab%e6%8d%b7%e5%88%aa%e9%99%a4%e8%87%a8%e6%99%82%e8%a1%a8%e7%a9%ba%e9%96%93-SAcxvKZEWH\">SQL 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id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%88%aa%e9%99%a4%e8%87%a8%e6%99%82%e8%a1%a8%e7%a9%ba%e9%96%93%ef%bc%9f-SAcxvKZEWH\">\u70ba\u4ec0\u9ebc\u9700\u8981\u522a\u9664\u81e8\u6642\u8868\u7a7a\u9593\uff1f<\/h2>\n<p>\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u81e8\u6642\u8868\u7a7a\u9593\u53ef\u80fd\u6703\u7a4d\u7d2f\u5927\u91cf\u7684\u6578\u64da\uff0c\u9019\u6703\u5c0e\u81f4\u4ee5\u4e0b\u554f\u984c\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u4e0b\u964d\uff1a<\/strong>\u904e\u591a\u7684\u81e8\u6642\u6578\u64da\u6703\u5f71\u97ff\u6578\u64da\u5eab\u7684\u67e5\u8a62\u6027\u80fd\uff0c\u5c0e\u81f4\u67e5\u8a62\u901f\u5ea6\u8b8a\u6162\u3002<\/li>\n<li><strong>\u78c1\u789f\u7a7a\u9593\u4e0d\u8db3\uff1a<\/strong>\u81e8\u6642\u8868\u7a7a\u9593\u4f54\u7528\u7684\u78c1\u789f\u7a7a\u9593\u53ef\u80fd\u6703\u5c0e\u81f4\u5176\u4ed6\u6578\u64da\u5eab\u64cd\u4f5c\u7121\u6cd5\u9032\u884c\uff0c\u7279\u5225\u662f\u5728\u78c1\u789f\u7a7a\u9593\u6709\u9650\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<li><strong>\u7ba1\u7406\u56f0\u96e3\uff1a<\/strong>\u96a8\u8457\u81e8\u6642\u6578\u64da\u7684\u589e\u9577\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u8b8a\u5f97\u66f4\u52a0\u8907\u96dc\uff0c\u589e\u52a0\u4e86\u7dad\u8b77\u7684\u96e3\u5ea6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%88%aa%e9%99%a4%e8%87%a8%e6%99%82%e8%a1%a8%e7%a9%ba%e9%96%93-SAcxvKZEWH\">\u5982\u4f55\u522a\u9664\u81e8\u6642\u8868\u7a7a\u9593<\/h2>\n<p>\u522a\u9664\u81e8\u6642\u8868\u7a7a\u9593\u7684\u5177\u9ad4\u65b9\u6cd5\u53d6\u6c7a\u65bc\u6240\u4f7f\u7528\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u522a\u9664\u81e8\u6642\u8868\u7a7a\u9593\u7684\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"mysql-SAcxvKZEWH\">MySQL<\/h3>\n<pre><code>DROP TEMPORARY TABLE IF EXISTS temp_table_name;<\/code><\/pre>\n<p>\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0a\u8ff0\u547d\u4ee4\u522a\u9664\u81e8\u6642\u8868\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u81e8\u6642\u8868\u5728\u6703\u8a71\u7d50\u675f\u6642\u6703\u81ea\u52d5\u522a\u9664\uff0c\u56e0\u6b64\u901a\u5e38\u4e0d\u9700\u8981\u624b\u52d5\u522a\u9664\u3002<\/p>\n<h3 id=\"postgresql-SAcxvKZEWH\">PostgreSQL<\/h3>\n<pre><code>DROP TABLE IF EXISTS temp_table_name;<\/code><\/pre>\n<p>\u5728 PostgreSQL \u4e2d\uff0c\u81e8\u6642\u8868\u7684\u522a\u9664\u65b9\u5f0f\u8207 MySQL \u985e\u4f3c\u3002\u4f7f\u7528 DROP TABLE \u547d\u4ee4\u53ef\u4ee5\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u81e8\u6642\u8868\u3002<\/p>\n<h3 id=\"oracle-SAcxvKZEWH\">Oracle<\/h3>\n<pre><code>TRUNCATE TABLE temp_table_name;<\/code><\/pre>\n<p>\u5728 Oracle \u4e2d\uff0c\u4f7f\u7528 TRUNCATE \u547d\u4ee4\u53ef\u4ee5\u5feb\u901f\u6e05\u7a7a\u81e8\u6642\u8868\u7684\u6578\u64da\uff0c\u800c\u4e0d\u9700\u8981\u522a\u9664\u6574\u500b\u8868\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-SAcxvKZEWH\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u70ba\u4e86\u6709\u6548\u7ba1\u7406\u81e8\u6642\u8868\u7a7a\u9593\uff0c\u5efa\u8b70\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li>\u5b9a\u671f\u6aa2\u67e5\u81e8\u6642\u8868\u7a7a\u9593\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u78ba\u4fdd\u4e0d\u6703\u4f54\u7528\u904e\u591a\u7684\u78c1\u789f\u7a7a\u9593\u3002<\/li>\n<li>\u5728\u57f7\u884c\u5927\u578b\u67e5\u8a62\u4e4b\u524d\uff0c\u78ba\u4fdd\u6709\u8db3\u5920\u7684\u81e8\u6642\u8868\u7a7a\u9593\u53ef\u7528\u3002<\/li>\n<li>\u4f7f\u7528\u81ea\u52d5\u5316\u8173\u672c\u5b9a\u671f\u6e05\u7406\u4e0d\u518d\u9700\u8981\u7684\u81e8\u6642\u8868\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-SAcxvKZEWH\">\u7d50\u8ad6<\/h2>\n<p>\u81e8\u6642\u8868\u7a7a\u9593\u7684\u7ba1\u7406\u5c0d\u65bc\u4fdd\u6301 SQL 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